Damping mechanism for lithographic presses.



N11. 637,575. Patented Nov. 2l. |899.

E. HETT.

DANIFING MECHANISM FR LITHOGRAPHIC PRESSES.

(Application filed June 13, 1898.)

(No Model.) 5 S eeis--Sheet l.

Hl WI mmm f Illll n INVENTDR www@ HM BY WKZ@ L N0. 637,575. 'PatentedNow 2|, |899` E. HETT.

DAMPl-NG MECHANISM FDR LITHOGRAPHIC PRESSES.

(Application mea June 13, lees.) v (No ModeL? 5 Sheetsj-Sheet 2,

ATTORNEYS No. 637,575. Patented Nov. 2|, |899` E. HETT.

DAMPING MECHANISM FDR LITHUGRAPHIC PRESSES.

(Application filed June 13` 1898.)

(No Model.) 5 Sheets-Sheet 3.

dlllilllllllllllllllll WITNESSES:

vk MVM BY Vl/M+@ ATTORNEYS No. 637,575. vPatemtedNovl 2|, |899.

E. HETT. DAMPING MECHANISM FOB LITHUGRAPHIC PRESSES.

(Application led June 13, 1898.)

(No Model.) Us

5 Sheets-Sheet 4,

INVENTOR BYr s Norms PETERS oo PHcTaLxrHa. wAsnmaToN o No. 637,575. Patented Novyzl, |399.`

4 E. HETT.

DAMPING MECHANISM FOB LITHOGRAPHIE PRESSES.

(Apphcaton tled June 13, 1898.) (No Model.) 5 Sheets-Sheet 5.

WW L ATTORNEYS llgll'nan WITN Ess gs Ill anism for Lithographie Presses, of which the` Unirse. STATES .FFICE PATENT EDWARD HETT, or NEWYORK, N. Y.

v SPECIFICATION forming part of Letters Patent No. 637,575, dated November 21, 1899. v

Appiimtion tied June 13.1895.seminmesasts. nomaden n To `all whom t may concern: h

Be it known that I, EDWARD HETT, a citizen of the United States, and a resident of New York, (New Dorp,) in the county of Richmond,`

State of New York, have invented certain new and useful Improvements in Damping Mechfollowing is a specification.

My invention relates to lithographie or planographic presses, and particularly to the damping mechanism for use in such presses.

It has for its main object to provide improved means for supplying water in suitable quantities and at proper times and places.

to the dampingrollers of a lithographie or planographie press, and especiallyto prevent an excessive supply of water to such rollers and to the printing-cylinder.

It consists of the novel devices and combinations herein shownand described.

In the operation of lithographie presses great diihculty has heretofore been encountered in avoiding an excess of water upon the damping-rollers and upon the printingsurface, especially where the printing-surface is cylindrical, and particularly soin multicolor-presses where damping-rollers often lie directly above the paper web and where there are a plurality of sets of printing-cylinders,'each relativelysmall as eompared with the drum or impression cylinder and each with its set of inking-rollers and damping-rollers with their connections, and where,

-owing to the necessarily small size and crowded and complicated character of the mechanism and toits consequent inaceessibility when the press is in operation, it is of the utmost importance that the damping be automatic,

exact, and certain in its operation without ofthe damping-rollers. y

tends to form into drops or layers upon the damping-rollers or printing-surface, to ruin the lithographie surface, to work back upon the inking-rollers and mix with the ink, to interfere with the proper inking of the print ling-cylinder, to fall in drops upon the web,

and generally to render the resulting product inferior or unmarketable. I have found that by the use of a ne spray or sprays of water orot-hersuitable damping liquid thrown upon one or more of the damping-rollers and fed by any suitable means in connection with `damping-rollers, one or more of which are driven positively by any suitable driving @mechanism at a determinate rate of speed,- Awater or othersuitable damping liquid can found that all of these beneiicent results can be obtained by using one or more atomizers in which compressed air from a suitable source of supply is caused to blow across or around the mouth of a tube leading from any suitable watcr-supply and fromV which atomizer lor atomizers spray is thus thrown upon the ,damping-rollers@ I have alsorfound that these results are obtained to the best ad- Vantagewhen one or more atomizers, properly connected with sources of supply of compressed air and water', are caused to travel reeiprocatingly back and forthalong the length AThis `ease is designated by me as Case A to distinguish it from two other eases eXeeuted simultaneously herewith,designated by me as Cases B and C, respectively.

In the drawings accompanying this specication and forming part hereof, in which like reference characters in the ditferent iigures refer to corresponding parts, I have shown andwill now proceed to; describe the preferred form of my improved devices.

Figure `l is a plan of my improved damping devices.' Fig. 2 is a transverse vertical section on lines 2 2 of Fig. 3, looking in the direction of the arrow and extendingalso through i direction indicated by the arrows.

the dampinglrollers'. Fig. 3 is a verticallon gitudinal 4section of the damping devices,4 taken on the line 3 3 of Figs. 1 and 4in the transverse vertical section through the same, taken. on the lines 44 of Fig. 3,viewed.as in.. dicated by the arrows.y Fig. 5 `is longituidinal vertical section through the water-s upply passages, Athe water-reservoirs, andy the water-chamber. Fig. 6 is a transverse vertical section through the same online 6V 6 of Fig. 5. i, Figs. 7 ,8, 9,.,and 10 are detailed views of parts ofthe jaws of the reciprocating car-b` riage and the chain. Fig. 11 isa detailed end view of one'of the reciprocating carriages. Fig. 1-2- is a Iside view ot"l kthe same.

. printing-cylinders with their -sets of inkingrollers and damping-rollers and connections and the means for supplying compressed air and water to 'the dierent sets of' atomiz'ers,

` the air and water supply pipes being broken,

-as shown, toenable other parts to be seen more clearly, and the sets ot' damping-rollers and inking-rollers for one of the cylinders having their bearing-boxes. removed to show the parts behindv Fig. 16 is a front view of the parts shown in Fig. 15. l

1 r and 1 representv damping-rollers of 'a' lithographie press.

, sired kind ornunlber and arranged in any desired manner. As shown in the drawings, 1

isfan vordinary brass roller and constitutesthe distributing-roller, and 1a 1a are the c l'o'th- (See Fig. 15.)

upon frames 2, of which'one only is shownin -the drawings pivoted upon the shaftof theink-distributing cylinder 36 and operated by any suitable mechanism, so as to be capable Y of being swung back-and `forth vso as to he f damping-rollers, as shown in Fig. 2. w

capable of movingthe damping-rollers out of or into printing position. f n

f '4 4 a-re atomizers having orices 5 5f/or throwing fine 'spray upon one or more yof the The `atomizers4 4 are each mounted on arecipro-` eating carriage '6 6.' The reciprocating car 'riages are secured inguidesof an air-cylinyder 7 and are adapted to have a reciprocating-longitudinal motion along the air-cylinder, and j thus Vto have al reciprocating-longitud`inal-motionin-the direction of the axes olf the damping-rollers.` Compressed air is con-y stantly supplied from a compressed-air rese'r-iV Voir 8 in 'the air-cylinder 7 to the atomizersj in a manner presently to be described.l Each 1 carriage 6 carries a water-chambe'rji) forfsup- Fig. 13` shows means 4for adjusting the yair-cylinder.`

These may be of any de-y plying water tothe 'Vatomizer in a manner presentlyto be described. Thestore of wa ter in the `water-chamber is renewed each time the carriage reaches the end of its travel toward Vthe right, as shown in Figs. 3 and 5,

from'a water-reservoir 10. vThe air-passage llysupplies compressed air to theair-reservoir 8 from an air-pump orother suitable source. `Water is supplied to the `Water-reservoir 10 through the pipe 12. -l l n b Reciprocating longitudinalA motion along the air-cylinder 7 is givento the reciprocating carriages' t' by means of an endless chain 13. This chain is driven, in a manner presently to be described, constantly in the same direction and forms afhorizontal looparound the `air-cylinder.

v Each reciprocating carriage is provided with'two sets of jaws, one se'tadapted to grip-the chain upon one side of the aircylinder 'and the other set'ftogrip the chain upon theother side, and `so arranged that one set only is in operation at one time. O ne set of either carriage grips the'chain upon one side, thus causing the carriage to be pulled to the opposite end of the .aircylinder,`where lupon that set of jaws release their grip uponV the chain upon'that side and the other set of jaws grip the chain upon the othery side of the air-cylinder, causing the reciprocating ycarriage to be carried vagain to theopp'osite end lof the air-cylinder, where the secondset of jaws release their grip upon the'chain and the first set again take hold. Thus a constant vreciprocating motion is given v.to each recipf `rocating carriage andto the atom'izer carried by it. As shown, the reciprocating carriages are arranged so ythat when either one is at one end yof vthe air-cylinder 'the other carriage will be at the opposite end. The y,motion of one vof. the carriages is `therefore always in a direction `reverse tothat of the motion vot the other; The details of this mechanism will be described :farther on.

Each atomizer is composed of acentral tube 14, throug-h which the water passes and which extends at vone en'dinto water-chamber 9 to a point 'near the bottom of the chamber, as shown in Figs. 4 and -5,and o f a surrounding air-tube 15.

y Airtube 15 is connected by air-passage 11S with an air-chamber 17 in the reciprocating carriage. 'Air-tube 15 also lexten-ds down and opens into the upper part yof water-chamber 9. Compressed air -frorn-air- `chamberf17 passes through air-passage 1:8 into air-tube 15, 4exerts a pressure upon. the Water vin water-chamber 9 tending to aid in forcing water up throughwater-tube 14, andin blowing aroundand across the opening 16 in the water-tubeand out through orice V"5 `draws water from water-tu`be 14 and vdrives it inthe form of ne spray upon'the damping-rollers. The compressed air in air-.tubefl` thus-not only comminutes the water into fine spray,

y but yalso exerts-fa pushing as well asa pulling The central Water-tube 14 has an -opening16 at its end opposite the orifice 5v ofthe atomize-r.

IIO

pressure upon the water. in the water-tube, causing a more positive feed to be given to the atomizers.

Compressed air is supplied to air-chamber 17 by the following-described means: Airreservoir 8 is provided on each side with a series of screw-threaded openings 19. Each series of these openings is so arranged lthat as a reciprocating carriage passes forward or backward along the air-cylinder the air-chamber 17 will register with each of the openings 19 in turn. In each of these openings is screwed a short cylinder 20, forming a valve-seat for a valve 21. Each valve is composed of a circular head, forming the valve proper, and a stem 22, working in bearings 23 in the valveseat cylinders 20. Aspring 24 tends to keep the valves closed against the valve-seat.

25 aretwo spring-buttons secured in airchamber 17 of the reciprocating carriage and are so arranged that as the reciprocating carriage travels along the air-cylinder the springbuttons 25 will successively strike against and depress the stems 22 of the-valves 21, thus successively opening the valves and permitting compressed air to How from the air-reservoirinto the air-chamber. If desired, these spring-buttons may be so arranged that while one is passing over the intervening spaces between the openings into the air-reservoir the other will be in contact with the stem of one of the valves, in this way insuring a continuous opening between the air-reservoir aud the air-chamber, so that a constant pressure of air will always be operative upon the ato1nizer,while the press is in operation.

In the form of device shown in the drawings I have shown two reciprocating carriages 6 6, one on the upper side and one on the under side of the air-cylinder. Accordingly one of the series of openings into the air-reservoir is arranged along the upper surface of the air-cylinder and the other along the lower surface of the air-cylinder. Air is supplied -to the reservoir 8 through air-pipe 11 and airpassages 26. The supply of such air can be regulated in any well-known manner.

In order to secure the reciprocating carriages to the air-cylinder and to permit ot their free longitudinal motion thereon,curved plates 27 are bolted or otherwise secured to the air-cylinder upon each side, as shown in Fig. 2, and along the upper and lower edges of each plate a portion of the same is cutaway toward the air-cylinder to forln guideways 2S, into which project anges or edges of a4 curved plate 29, secured to each reciprocating carriage, as clearly shown in Fig. 2.

The mechanism for imparting to the reciprocating carriages their reciprocating longitudinal movements consists of the followingdescribed devices: Chain 13 is continuously driven in the direction of the arrows shown in Fig. 1 by means of sprocket-wheels 30 30. One of the latter is mounted upon shaft 3l. This shaft has at one end a beveled gearwheel 32, meshing with beveled gear-wheel 33 on shaft 34.- Shaft 34 also carries a spurwheel 35, meshing with a spur-wheel 36, mounted upon or secured to the ink-distributing cylinder 36a. By the above-described gearing, actuated by the driving mechanism of the press, continuous mot-ion is imparted to endless chain 13, as above described. Each reciprocating carriage has secured to it a yoke 37. This yoke is loosely mounted upon a short shaft 3S on each carriage immediately over or under the air-cylinder, so as to be capable of a slight oscillating movement. Each yoke is provided at each end with a set of jaws, one jaw of each set being the end 38 of the yoke and the other jaw being a spring-jaw 39, secured by a spring-arm 40 to the yoke, as by bolts 41. The yoke 37 is composed of two parts 42 and 43, slightly independent of each other in movement. A spring 44, secured to each of the two parts 42 and 43, tends to keep them apart, while a spur 45 on the part 43 and a pin 46 on part 42, adapted to strike against each other,as in Fig. 2, tend to prevent the action of the spring from pressing them any farther apart,

as shown in Fig. 2. lVhen one side of the yoke is lifted, it tends to press the spring 44 to the other side. The elastic connection between the two parts, by means of the spring 44, enables one side to move slightly under ordinary pressure, while the other side is rigidly held, thus preventing fracture of the parts in case both parts of the yoke should be acted upon by the cams or by any obstruction at the same time. The jaws 3S and 39 are adapted when opened and when brought into proper position opposite a link of the chain 13 to seize the upper or lower portion of the link and to thus securely grip the `chain for the purpose of enabling the chain to pull the reciprocating carriage from one end of the air-cylinder to the other. The jaws are brought into the proper position for thus gripping the chain by means of the cams 47. One of these cams is shown in detail in Fig. 14. It has two operative cam-faces, one, 48, which is a vertical face inclined outwardly from the air-cylinder, and two faces 49, inclined upward and downward, respectively, at an angle. As the reciprocating carriage approaches one end of the air-cylinder the spring-jaw 39 of the set of jaws gripping the chain comes into contact with face 4S of cam 47, throwing the spring outward and drawing tooth 50 of the jaw 39 out of the link of the chain into the position shown in Fig. 9, thus releasing the grip o f the jaws upon the chain at that point. XVhen the jaw strikes the inclined upward face 49 of the cam, it tilts the yoke 37 upward, throwing the opposite part ofthe yoke downward and causing the springjaw 39 of its set of jaws to strike against a link of the chain on the opposite side of the loop formed by the chain 13, forcing the spring-jaw outward until it passes over the outer part of the link, whereupon the tooth 50 of the jaw slips into the link, seizing the ICO 6s order to prevent this rotation of the shaft of cylinder 7 from throwing gear 32' out of .mesh

a 'l f 637,575.

chain, as shown in Fig. 10.` The carriage is now. gripped to the opposite side of theloop formed by the chainy 13 and is thereupon hauled in thejopposite direction to the starting-point at the other endof the air-cylinder.

There the grip of the jaws upon the-chain is released by a similar cam 47, and the set of jaws first in operation take hold of the chain upon theopposite side of the loop. In thisl wayaconstant reciprocating motion ofthe' carriage from one end .of the air-cylinder to the other is' secured. Fig. 7 is a side viewof' plenished .by the following-described means:

l10 10 are two water-reservoirs, one abovethe other,.as shown in Fig. 5, at one end of the air-cylinder.

these reservoirs registers with the vwaterchamber 9 ofthe upper reciprocating carriage and the lower one with water-chamber 9,0f the lower reciprocating carriage'when .those carriages are .at the extreme right-hand point of their travel, asshown in Figs. 1 and 5.

When thewater-chamber of one of the reciprocating carriages is in this position, an opening 51, leading to the water-chamber, and an opening 52,1eading from the water-reservoir 10, register with each other.

by valve 54. These valves are held ina closed position against the openings or valve-seats by springs and 56, respectively, which act upon the stems ofthe valves. A stop 57 lim-v its the opening move'ment of theyalve 53. The outer part of the stem of valve 54 projects through opening 52 slightly outside of the case of reservoirlO, as shown in Fig. 5..

stronger than .spring 55, untilvalve53 strikes against stop 57, whereupon valve 54 is forced from its seat, thusaifordin g a direct and open passage-Way from `reservoir 10 to water-cham ber 9., permitting the waterto flow from the` former into the latter, thus repl'enishing the stock in the waterchamber. This replenishing operation is repeated vat every complete travelv of the reciprocating carriage. A rub ber ring 58 in the face of the casingrof reser-l ing air-cylinder 7 vsoas to permit of its Vrota-v ltion upon its vaxis to any desired position.-`

Thecyl'indrical ends of the shaft of airfcylin.- der '7 'arefseated in cylindrical openings in bearings 59 in the frame of the m'achineand can `be. rotated Vin Ysaid bearings lasdesired. Whenrotated to the desired position,they are secured by a set-screw 60 as shown;` .In

They are connected bypas.-k lsages to water-pipe 12. The upper-oneof Opening. 51'is closedby valve 53, and opening 5,2 is-closed Yah gear 33, I make bearing-box 59 adjustable sidewise and' also' make gear 32 adjustable along` shaft 31. BearingLbox 59'can be vmoved sidewisea slight distance and can be secured in any position by means of screws 72, mounted in screw-,threaded openings 73 in the frame. Nuts 74are for the' purpose of lockingscrew l72 inany position. Imake gear 32 `adjustable slightly along shaft 31Aby providingthe gear with a screw-threaded opening, in which ya screw 75 isplaced. By

unscrewing this screw. gear 32 can be slightly moved lengthwise of shaft31 and by 'tighten- Y and gear 32, `as above described, gears 32and 33 can always be kept in mesh .with each other.

In Figs. l5 and l16 Iy have .shown my improved -.devices Vas lapplied to amulticolorpress. where a large drum, 1"A has a'series of relatively small printing-cylinders 1b 1*. surrounding it, each-with its set of inking-rollers 61 and other inking mechanism and its set of damping-rollers 1 l. With'so manyand such fine and complicated parts `crowded ,closely together in a,v comparatively small space it is impossible to show the mechanismin detail or even to showall of it inthese views. They are intended merely to show the general arrangement of my improved devices in a multicolor lithographie press and to show the in' eans'forsupplying compressedair and water vor other lsuitable Vdamping liquid tothe different sets of atomizers and the means for positively driving the distributing dampingrollers 1 1. v62 is an air-supply pipe for supplying compressed air .to the diierent airreservoirs 8. It is connected vwithan air- `pump (not shown) or any other 'rsuitalble As the reciprocating carriage approaches reservoir 10 the outward end -of the stem of valve 54 strikes against valve 53 of water-chamber 9, forcing it backward, as spring 56 is made.l

source of supply of compressed air. Branch air-pipes 63, each provided with a4 cock 64,

's lead from air-supply pipe 621and are provided atitheir ends with flexible hose connections 65, leading to air-pipe l1. The flexible lhose .permit the swinging action ofthe dampingdamping liquid to the various water-reservoire. pipes 67, having cocks 68 and 'exible hose 69` .connecting with thevariouswater-p-ipes 12, V66'is connected with `apufmp (not shown) or It is similarly provided with branchany yother suitable .source vof supply of Water 4or other fsuitab'le'da'mping liquid. By the above Vmeans .the various `water-reservoirsare readily and constantly Vsupplied `with dampifng liquid. -Each distributing damping-.roller 1 ,is positively :driven by the driving mechianiism of the press in the following manner: 36isthe ink-distributingiroller. Itis driven by "the driving :mechanism ofthe press in any IOO IIO

suitable manner. Spur-teeth upon ink-distributing roller 36a, through spur-wheel 35, drive spur-wheel '70,loosely mounted upon the shaft of one of the damping-rollers la, and the latter drives spur-wheel 7l, rigidly secured to the shaft of distributing damping-roller l,

, thus driving the latter positively at any determinate rate of speed desired. Roller l drives rollers 1f;L la by friction in the usual way. By driving the damping-rollers positively at a determinate rate of speed I have found that the amount of water best suited for lithographie work can be obtained with greater accuracy and certainty than when the rollers are driven by friction. in the usual manner.

By means of my improved spraying device in connection with damping-rollers driven positively by suitable driving mechanism at a determinate rate of speed I am enabled to supply to the damping-rollers with greater certainty and exactness an amount of-damping liquid suited to produce the best results in lithographie printing and to avoid both a scarcity and also an excess of such liquid, and I am thus enabled to prevent the injurious results referred to above that flow from either such an excess or a scarcity. These beneficial results are obtained in a high degrec of excellence where my spraying device is a traveling one, as in such a construction of the parts both the spraying device and damping-roller are constantly moving and the stream of fine spray falls upon any one spot of the surface of the damping-roller but for the briefest moment of time, thus preventing the formation of drops or layers or the deposit upon the damping-rollers of any excessive amount of damping liquid, while furnishing at the same time by a positive feed a sufficient amount of liquid properly distributed to answer all the requirements of good lithographie printing. By the use of the atomizer, the preferred form of my spraying de- Vice, the stream of spray is finelycomminuted and well distributed and can be readily and accurately regulated.

As my improved devices are automatic and are accurate, reliable, and certain in operation and need little supervision, they are of especial value in multicolor-presses, where the parts of the mechanism are numerous and complicated in character and small in size, where the printing is rapidly performed, and where printingis taking place simultaneously in many different places, so that constant supervision and regulation of the action of the damping mechanism, so necessary in the mechanism now employed in lithographie presses, cannot be maintained.

The term lithographic as used in the specication and claims herein is employed in its broad sense of planographic to include anyprinting by the lithographie process or any printing-surface adapted for printing lithographically, whether such printing be done by or such printing-surface be stone,

metal, or any other surface capable of printing by the lithographie process as distinguished from printing from an intaglio or raised su rface or whether such lithographie-printing surface be fiat, curved, or cylindrical.

Many modifications may be made in the above-described apparatus without departing from my invention. Thus the spraying device employed need not travel. It need -not be an atomizer, but may be any suitable means for spraying liquid. Changes may be made in the form, number, and arrangement of the spraying devices employed, or where a traveling spraying device is used in the extent of its travel and the means for imparting reciprocating motion to it, or where an atomizer is used in the means for supplying compressed air and water to the atomizer. Many modifications might be made other than those above recited. In supplying the water to the atomizer I prefer to have the Water under pressure (although this is not essential to the operation of my improved devices) inasmuch as a more positive feed is obtained where the Water is kept -under pressure.

What I claim as new, and desire to secure by Letters Patent, is-.-

l. The combination of a damping-roller of a lithographie press, two traveling spraying devices each adapted to have a reciprocating longitudinal motion in the direction of the axis of the damping-roller but always in adirection reverse to that of the other spraying device and each adapted to throw spray for damping the roller, means for imparting such reciprocating longitudinal motion to i the spraying devices, means for feeding the spraying devices with suitable damping liquid.

2. The combination with a damping-roller of a lithographie press, of a traveling spray# ing device, adapted to have a reciprocating longitudinal motion in the direction of the axis of the damping-roller and adapted to throw spray for damping the roller, an opening connecting with the water-tube of the spraying device adapted to register at some part of the travel of the spraying device with an opening from a source of liquid-supply, valves for said openings adapted, when the said openings register with each other, to open to permit water or other suitable damping liquid to flowinto the water-tu be of the spraying device for feeding the spraying device with such liquid.

3. The combination with a damping-roller of alithographic press, of two traveling atomizers, each adapted to have a reciprocating longitudinal motion in the direction of the axis of the damping-roller but in a direction reverse to that of the other atomizer and each adapted to throw spray for dampingv said roller, means for imparting such reverse longitudinal motion to the atomizers and means for supplying damping liquid and compressed air to the atomizers.

4. The combination with a damping-roller ISO IOS

IIO

las

ot'y a lithographie press,"of avtraveling atomizer,adaptedl to have a reciprocating longitudinal motion in the direction of the axis of v the damping-roller. and to throw spray for ldamping saidroll`er,'an' endless chain and means for driving it, two sets of jawsfeom neeted with the atomizer, one set adapted to grip the chain on yone side of the loop formed y by the chain andthe other setadapted to grip the chain on the other side of the loop,`meansr` for causing the'jaws to grip and to release the l chain, whereby a reciprocating, longitudinal motion will be impartedto the` atomizer and means for supplying damping liquid and eon-r pressed air to theatomizer. 5i The combination with a damping-*roller `of a lithographie press, of a'traveling atom-l izer, adapted to have a reciprocating longif j tudinalmotion in the direetionof the axis of. the damping-roller and to th-row spray for damping said roller, an endless chainandy means for driving it, two sets of jaws con-r* nected with the atomizer, one set adapted to w .means for supplying damping liquid and eom-.j -A pressed air to theatomizer.

6.` The combination with a dampingaoller` of a lithographie press, of a traveling atomizer adapted to have a reciprocating longii b D ltudinal motion in the direction of the axis of the damping-roller land to throw -spray- `for l vvneeted with the atomizer, one set adapted toy damping saidy roller, an endless Vchain and means for driving` it,two sets of jaws eon` grip the chain on one side of the loop formed u bythe chain and the other set adaptedto grip the chain on the other side of the loop, eams to release the chain from one set of said jaws and to cause the other set` to grip the eh'ain onthe other side,of the loop, whereby a ref eiproeating, longitudinal motion will be imparted to the atomizer and meansfor'supjplying dampin g liquid and compressed air to the atomizer.y

7. The combination with a damping-roller of a lithographie press, 'of a traveling atom# izer, adapted to `have a reciprocating longitudinal motion'in the direction of the axis of the damping-roller and to throwspraypfor damping said roller, an endless chain and means for driving it, a tilting yoke secured to the atomizer having a set of jaws ateaeh onthe other side ofthe -said loop, cams 4toire-` lease the chain from one set of said jaws and "to cause the other set to grip thev chain on the r side of theA loop, whereby a reeiproeat oi its ends, one set adapted to grip the ehaiir' I on` one side o f 'the loop formed by theehain and-the other set adapted to grip the chain ing, longitudinal motion will be imparted to the atomizer, and means for supplying damping liquid and compressed air to theatomiz'er.

8. The combination-with a damping-roller of a lithographiev press, of, an atomizeradapted to throw spray for damping said roller, areeiproeating carriage' upon which theatomizer is borne,y an endless chain and means for driving it, a tilting yoke secured to the reciproe'ating carriage having a set of, jaws at each -of its ends, oneset adapted to grip the chain on one side of' the loopformed by the chain and the other set ladapted to grip the chain on the other side of the said loop, cams to re leasethe chain from one set ofns'aid jaws ,and toeause the other set to grip the ehainon the other-side of the loop, whereby ajreeiproeatinglongitud'inal motion in the direction of the `artes of the Adamping-rollors will beimparted Vto the reciprocating carriage and the atomizer,` and vmeans for supplying damping liquid and compressed air to the atomizer.

9. The combination with a damping-roller;

' of a lithographie press, o f an atomizer adapted to throwspray for damping said roller, a reciprocating carriage upon which theatomizer is borne, an endless chainand means for drivcating 'carriage having a setof jaws at each `of its ends, one set adapted4 to grip the chain on mega-'sideot` the loop formed by the chain Aand the other set adapted to grip 'the chain on the other side of the said loop, springs for closing said jawsto vgrip the chain, camsto force one setof jaws opento release the chain and to tilt the yoke soas to cause ,the'other set o'f jaws` to seize the chain on the otherside of the loop, whereby a reciprocating longi^- ltudinal'motion'in the direction of thel axes of. the `damping-rollerwillbe imparted tothe IOO compressed air to lthe atom1 zer. 1 j 10. The combination with a damping-roller of a lithographie press,of an atomizer adapted to throw spray vfor damping said roller, `a reeiproeatin g carriage upon which the atomizer is borne, an endless chain and meansfor driving it, a tilting `yoke secured to the reciproeatin g carriage composed of two parts movable relatively upon eaeh other, each part having a set of jaws at its end, one set adapted togrip the chain on one side of the loop formed by the chain and the other set adaptedto grip the chain on the other side Lof Vthe said loop, springs for closing said jaws to grip the chain,

cams to force one set of jaws open to release theehain and to tiltthe yoke so as-to cause the other set of jaws toseize the chain on the other side of the loop, whereby a reciprocat-v ing longitudinal .motionin the direction of 'the axes of the damping-roller will beimparted lto the reciprocating carriage and the atomizer, and a springv forpressing the two parts of the yoke away from each other, a provjeeting` arm of one part adaptedl to strike a stop onA Vthe other to limit'sueh movement, all- IIO so arranged that the yoke will remain sufficiently rigid to cause the cams and the sets of jaws to release and seize the chain but will yield to prevent fracture of the apparatus when any obstruction is encountered, and means for supplying damping liquid 'and compressed air to the atomizer.

11. The combination with a damping-roller of a lithographie press, of two atomizers adapted to throw spray for damping said roller, a reciprocating carriage for each atomizer upon which it is borne, an endless chain forming a loop, means 'for driving it, a tilting yoke secured to each reciprocating carriage having a set of jaws at each of its ends, one set adapted to grip the chain on one side of the loop formed by the chain and the other set adapted to grip the chain on the other side of the said loop, cams to release the chain from one set of said jaws and to cause the other set to grip the chain on the other side of the loop, whereby a reciprocating longitudinal motion in the direction of the axis of the dam ping-roller and in a direction the reverse of the travel of the other carriage and atomizer will be imparted to each carriage and atomizer, and means for supplying damping liquid and compressed air to each atomlzer.

1 2. The combination with a damping-roller of a lithographie press, of two atomizers adapted to throw spray for damping said roller, a reciprocating carriage for each atomizer upon which it is borne, an endless chain forming a loop, means for driving it, a tilting yoke secured to each reciprocating carriage havinga set of jaws at each of its ends, one set adapted to grip the chain on one side of the loop formed by the chain and the other set adapted t0 grip the chain on the other side of the said loop, cams to release the chain Vfrom one set of said jaws and to cause the other set to grip the chain on the other side of the loop, wherebya reciprocating longitudinal motion in the direction of the axis of the dam ping-roller and in a direction the reverse of the travel of the other carriage and atomizer will be imparted to each carriage and atomizer, and means for supplying damping liquid and compressed air to each atomizer.

13. The combination with a damping-roller of a lithographie press, of two atomizers adapted to throw spray for damping said roller, a reciprocating carriage for each atomizer upon which it is borne, an endless chain forming a loop, means for driving it, a tilting yoke secured to each reciprocating carriage having a set of jaws at each of its ends, one setadapted to grip the chain on one side of the loop formed by the chain and the other set adapted to grip the chain on the other side of the said loop, springs for closing said jaws to grip the chain, cams to force one set of jaws vopen to release the chain and to tilt the yoke so as to cause the other set of jaws to seize the chain on'the other side of the loop, whereby a reciprocating longitudinal motion in the direction of the axis of the damping-roller and in a direction the reverse of the travel of the other carriage and atomizer will be imparted to each carriage and atomizer, and means for supplying damping liquid and compressed air to each atomizer.

14. The combination with a damping-roller of a lithographie press,of two atomizers adapted to throw spray for damping said roller, a reciprocating carriage for each atomizer upon which it is borne, an endless chain forming a loop, means for driving it, a tilting yoke secured to each reciprocating carriage composed of two parts movable relatively upon each other, each part having a set of jaws at its end, one set adapted to grip the chain on one side of the loop formed by the chain and the other set adapted to grip the chain on the other side of the said loop, springs for closing said jaws to grip the chain, cams to force one set ot' jaws open to release the chain and to tilt the yoke so as to cause the other set of jaws to seize the chain on the other side of the loop, whereby a reciprocating longitudinal motion in the direction of the axis of the damping-roller and in a direction the reverse of the travel of the other carriage and atomizer will be imparted to each carriage and atomizer, arspring for pressing the two parts of the yoke away from each other, a projecting arm of one part adapted to strike a stop on the other tolimit such movement, all so arranged that the yoke will remain sufficiently rigid to cause the cams and sets of jaws to release andseize the chain but will yield to prevent fracture of the apparatus when any obstruction is encountered, and means for supplying damping liquid and compressed air to each atomizer.

15. The combination with a dam ping-roller of alithographic press, of an atomizer adapted to throw spray for` damping said roller, a reciprocating carriage upon which the atomizer is borne, means for imparting to the carriage a reciprocating longitudinal motion in the direction of the axis of the damping-roller, an air-cylinder, containing areservoir of compressed air, along which the reciprocating carriage is adapted to travel, openings inthe aircylinder registering with an opening into the carriage connecting with the air-passages of the atomizer, valves for said openings in the air-cylinder adapted to open as the said opening in the carriage registers with the said openings in the air-cylinder, to permit compressed air to flow from the reservoir of the air-cylinder to the atomizer, and means for supplying damping liquid to the atomizer.

16. The combination with a damping-roller of alithographic press, of an atomizer adapted to throw spray for damping said roller, a reciprocating carriage upon which the atomizer is borne, means for imparting to the carriage a reciprocating longitudinal motion in the direction of the axis of the damping-roller, an

'air-cylinder, containing a reservoir of com- IOO IIO

pressed air, along which the reciprocating carriage is adapted to travel, means :for supplying compressed air tothe reservoir, open? openings in the airfcylinder adapted to open vas the said4 opening in the carriage registers with'the said'openings in the air-cylinder, to

permit compressed air to flow-from the reserf voir of the air-cylinder to the atomizexgand means for supplying damping liquid'to the atomi'zer.- Y

17. The combination with a damping-,roller of alithographic press, of an atomizer adapted to throw spray for damping saidl roller, a reciprocatin'gcarriage upon which the atomizer is borneymeansfor imparting to the carriage a reciprocatingflongitndinal motion in the direetion of the axis of the damping-roller, an

A air-cylinder, containing a reservoir Ofcompressed air, along which 'the reciprocating carriage is adapted to travel, openings in the air-cylinder registering' with an openingl in to the earrlage connecting with the air-passages oliV the atomizer, valves for said openings, l

springs for closing the valves, a spring-but# ton uponth'e carriage adapted to engage withv thevalves to open them as the opening'in thel .so

carriage registers with "the openings vin the t air-cylinder` to permit com-pressed air to (low `from the'reservoirof the-air-cylinder'to the air-passagesl ofthe reciprocating carriage,

, and means'for."supplyin'g dampingliqnid to the atomizer. i s s 18. The combination with a damping-roller ofalithographic press, of an atomizer adapted to throw spray for damping said roller, a re- Ass v air,'along which t-he reciprocating carriage is adapted to' travel,openings in the air-cylinderregistering with an openinginto thejairchamber off the carriage, valves for saido'penings in the air-cylinder adapted to open as the said opening in theearriage registers with the said openings ingthe air-cylinder, to permit compressed 'air to flow from the reservoir of the `air-cylinder to the atomizer, and means for supplying damping liquidvv to theatomizer. 19. The combination with-a damping-roller ofa lithographie press, of an atomizer adapted .f to lthrow spray forvdamping said roller, a reciproeating carriage upon which the atomizer ,y a reciprocating vlongitudinal motion in thedirection of the aXis'of the damping-roller, al; 4water-chamber and an air-'chamber in thecarrijage communicating with the atomizer,'means for supplying the said water-chamber with' 'Water or other damping liquid, an air-cylinis borne, means for imparting to the carriage containing a reservoir of `compressed resists air to-fiow from the reservoir of the air-cylinder'to the atomizer.' f v 1 20. The'combination witha damping-roller t of a lithographie press," of an atomizer adapted to throw spray for damping said roller, a reciprocating carriage upon which theatomizer is borne, means forimparting'to the carriage a reciprocating longitudinal'motion in the direction of'- the axis ofthe damping-roller, a water-chamber andan air-chamberin the carria'ge com mu nicating with the atomizer, means `:for'supplying the said water-chamber with damping liquid, an air-cylinder,containing .a' reservoir of compressed air, along which the 'reciprocating carriage is adapted to travel, lopenings in theair-cylinder registering with `an opening into the carriage connecting with the vair-passages of Vthe atomizer, valves Vfor said,` openings, VspringsV for 'closing the valves, aspring-buttonnponthe carriage adapted to- .engage Withthevalves to open them as the opening in the carriage Yregisters withv the openings in the airlcylinder to permitcompressed air to fiow from the reservoir'of the air-eylinderto the airp'assages'of -the reciprocating carriage. t, s 21. The'combination'with adamping-roller of a lithographie press, of two ato'mizers adaptcjd-to throw spray for damping' said roller, a v'reciprocatin g carriage' for each atomi'zer upon which it is borne,means for'imparting to each carriage a reciprocating longitudinal motion in ythe direction of the axis of the damping- `roller and in a direction thefreverse ot that of the travel of the other'carriage,ian'd means for supplying dain ping liquid and compressed air. to theatomizers; l f kl 22. The combination with adamping-roller 'of a lithographie press, of twoatomizers adapted to throw spray for .damping said'rOlIer, a reciprocatingcarriage' for each atomizer upon kwhich it is borne, means forimp'arting t0 each carriage a reciprocating longitudinal motion in the direction of the aXisof thedampingrollera-nd in a direction the reverse of that of the travelof the other carriage', an air-cylinder, containing a reservoir of compressed air, along which the reciprocating carriages are adapted to travel,op"enings inthe air-cylinder registering with openings linto the carriages' connecting withthe airpassages of the atomvizers, valves fd'rf said openings inthe air-cylinder adapted to'openas the said opening'sin the carriages register with the openingsinthe air-cylinder,to permit com 'pressed' air to flow from the reservoir of` `the Vair-cylinder to the atomizers', and means for' supplyingl damping liquid to` the .atomizers l 23. -The combination ,with a damping-roller IOO IIO

of a lithographie press, of two atomizers adapted to throw spray for `damping said roller, a reciprocating carriage for each atomizer upon which it is borne, means for imparting to each carriage a reciprocating longitudinal motion in the direction of the axis of the damping-roller and in a direction the reverse of that of the travel of the other carriage, an air-cylinder, containing a reservoir of compressed air, along which the reciprocating carriages are adapted to travel, openings in the air-cylinder registering with openings into the carriages connecting with theY air-passages of the atomizers, valves for said openings, springs for closing the valves, spring-buttons upon the carriages adapted to engage with the valves to open them as the openings in the carriages register with the openings in the air-cylinder to permit compressed air to iiow from the reservoir of the air-cylinder to the air-passages of the reciprocating carriages, and means for supplying damping liquid to the atomizers. Y

24. The combinationwithadamping-roller of a lithographie press, of two atomizers adapted to throw spray for damping said roller, a reciprocating carriage for each atomizer upon which it is borne, means for imparting to each carriage a reciprocating longitudinal motion in the direction of the axis of the damping-roller and in a direction the reverse of that of the travel of the other carriage, a water-chamber and an air-chamber in each carriage communicating with the atomizer borne by said carriage, means for supplying each water-chamber with damping liquid, an air-cylinder, containing a reservoir of compressed air, along which the reciprocating carriages are adapted to travel, openings in the air-cylinder registering with openings into the carriages connecting with the air-passages of the atomizers, valves for said openings in the air-cylinder adapted to open as the said openings in the carriages register with the openings in the air-cylinder, to permit compressed air to Iiow from the reservoir of the air-cylinder to the atomizers.

25. The combination with a damping-roller of a lithographie press, of two atomizersA adapted to throw spray for damping said roller, a reciprocating carriage for each atomizer upon which it is borne, vmeans for imparting to each carriage a reciprocating longitudinal motion in the direction of the axis of the damping-roller and in a direction the reverse of that of the travel of the other carriage, a water-chamber and an air-chamber in each carriage, communicating with the atomizer borne by said carriage, means for supplying each water-chamber with damping liquid, an air-cylinder, containing a reservoir of compressed air,-along which the reciproc ating carriages are adapted to travel, openings in the air-cylinder registering with openings into the carriages connecting with the air-passages of the atomizers, valves for said openings, springs for closing the valves, valves for said openings in the air-cylinder adapted to open as the said openings in the carriages register with the openings in the air-cylinder, to permit compressed air to iiow from the reservoir of the air-cylinder to the atomizers.

26. The combination with a damping-roller of a lithographie press, of an atomizer adapted to throw spray for damping said roller, a re' ciprocating carriage upon which the atomizer is borne, an endless chain forming a loop, means for driving said chain, a tilting yoke secured to the atomizer having two sets of spring-jaws, one set at each end of the yoke, one set adapted to seize the chain on one side of the loop and the other set adapted to seize it on the other side of the loop, a cam on each side of the loop for releasing the grip of one set of jaws, tilting the yoke and causing the other set of jaws to seize the chain upon the other side whereby a constant reciprocating longitudinal motion will be imparted to the atomizer in the direction of the laxis of the damping-roller, an air-cylinder, containing a reservoir of compressed air, along which the reciprocating carriage is adapted to travel, openings in the air-cylinder registering with an opening into the carriage connecting with the air-passages of the atomizer, valves for said openings in the air-cylinder adapted to open as the said opening in the carriage registers with the said openings in the air-cylinder, to permit compressed air to iiow from the reservoir of the air-cylinder to the atomizer, and means for supplying damping liquid to the atomizer.

27. The combination with a damping-roller of a lithographie press, of an atomizeradapted to throw spray for damping said roller, a reciprocatin g carriage upon which the atomizer is borne, an endless chain forming a loop, means for driving said chain, a tilting yoke secured to the atomizer having two sets of spring-jaws, one set at each end of the yoke, one set adapted to seize the chain on one side of the loop and the other set adapted to seize IOO IIO

it on the other side of the loop, a cam on each side of the loop for releasing the grip of one set of jaws, tilting the yoke and causing the other set of jaws to seize the chain upon the other side whereby a constant reciprocating` longitudinal motion will be imparted to the atomizer in the direction of the axis of the damping-roller, an air-cylinder, containing a reservoir of compressed air, along which the reciprocating carriage is adapted to travel, openings in the air-cylinder registering with au opening into the carriage connectingwith the air-passages of the atomizer, valves for said openings, springs for closing the valves, a spring-button upon the carriage adaptedto engage with thevalves to open them as the opening in the carriage registers with the openings in the air-cylinder to permit compressed air to flow from the reservoir of the air-cylinder tothe air-passages-of the recip-` rocating carriage', and means for supplying damping liquid `to the atomizer. Y n

28. The combination with a damping-roller of a lithographie press, of an'atomizer adapted to throw sprayfor damping said roller, a

reciprocating carriage upon whichthe atom'- izer is borne,- an endless chain forming a loop,`

means for driving said chain, a tilting yoke secured to the atomizer havingvtwo sets ofV spring-jaws, one-set at veach end ofthe yoke, one set adapted to seize the chain on one side of the loop Aand the other set adapted tozseize it-on the otherside of the loop, a cam on each side of the loop for releasing the grip of ione set of jaws, tilting the yoke and causing the other'set of jaws to seize the chain: upon the other side whereby a constant reciprocating longitudinal motion `will be imparted to the atomizer inthe direction of the axis vof the ,damping-rollen'an air-chamber in the *cari j rlage communicating with the air-passages-of the Vat'o`mizer',-an air-cylinder, vcontaining a reservoir offcompressed air, along which the reciprocating carriage is adapted to travel,

openings yin the air-cylinder registering with anopening into the air-chamber of the ear'-`r riage, valves for, said openings intheair-cylluder adapted to open as lthe said opening ,in the carriage registers with the said openings in the air-cylinder, to permit compressed air to flowfrom the reservoir of the air-cylinder to the atomizer, and means for supplying dam-ping liquid to theatomizer.

29. The combination Witha damping-roller ofa lithographicpress, of an atomizer adapted to throw sprayfor damping said rol1e`r,"a

reciprocating carriage upon which the atomizer 1s borne, an endless chain vforming a loop,

lmeans for driving said chain, a tilting yoke secured to the atomizer having to sets yot' spring-jaws,-one set-at each end of the yoke, one set adapted to seize the chain on one side of the loop and the `other set adapted to seize it on the other side of the loop, a cam on each 4vside of the loopfor releasing the grip of one set of jaws, tilting the yoke and causing thev other set of ljaws to seize the chain upon they other side whereby a constant reciprocating longitudinalmotion will be imparted vto" the atomizer in the direction of theaxis of the damping-roller, a water-chamber andan air-` chamber in the carriage communicating with theatomizer, means for supplying the said Water-chamber with damping liquid, 'an-aircylindei, containing a reservoir of compressed air, along which the reciprocating carriage is adapted. toftra'vel, openings in the air-cylin-v der registering with an opening into the carriage connectingwith the air-passages ofthe `atomizer,"valves for said openings, springs for closing the.valves, a spring-button upon registers with the openings in the air-cylinder ervo'ir' of v the air-cylinder 'to theair-lpassages of the reciprocating carriage. o 30. The vcombination with'a'dampingroller of a lithographic'press, oftwo atomizers-adaptloop, means for driving said chain, `a tilting .yoke secnredto each reciprocating carriage,

each yoke having two sets of spring-jaws, one set at each end of the yoke, one rset adapted Vtosei-ze thechain 011 one side of 'fthe loop and -the other set adaptedtoseize-it on the other sideof the: loop, :aycam von each sideof the loop for releasing the grip of onerset of jaws of each yoke, tilting 'the yoke and causing the other set ofjaws to seize the chain upon the other side whereby a constant reciprocating longitudinal Vmotion'will be rimparted to each reciprocating carriage and atomizer in the direction of the axis of the dam ping-roller andwhereby the, motion of each reciprocating carriage will always be 4in the reverse direction to that of the, other carriage, anaircylinder, containing a reservoir of compressed air, along which the reciprocating carriages are Yadapted t'o-travel, openings in the air-cylinder registering with openings into the carriages connecting with theair-passages of the atomizers, valves for said openings inthe aircylinder adapted to open as the said openings in the'carriage register with theLopening's in the air-cylinder, to permit compressed air to How from the reservoir of the air-cylinder to the atomizers,and means for supplyingdamping liquid to the atomizers. 3l. The'combination with a damping-roller of alithographic press,of Vtwo atomizers adapt-v ed tothrow spray for damping said roller, a reciprocating kcarriage foreach atomizer on which it is borne, an endless chain forming a loop, means fordriving said chain, atilting yoke secured to eachreciprocating carriage, each yoke havingtwo sets of spring-jaws, one

Vset at each end'of the yoke, oneset adapted *to seizethe chain on one side of the loopjand the other set adapted to seize it`on the `other side` of the loop, a Carnon each side of the `loop for releasing the grip of one set. of jaws of each yoke, tilting the yoke and vcausing the other set Vof jaws to seize 'the chain upon 'the other side whereby a constant reciprocatcarriagev will' always be inthe reverse direction tothat of the Aother carriage, an,aircyl' inder, containinga reservoir ofleompressed pair, along which the reciprocating carriages are adapted to travel, openings in the air-cylinder registering ,with openings into the carriagesconnectingwith the :air-passages of lthe `atomizers, valves for said openings, springs for closing the valves, spring-buttons'upon the carriages adapted tork .engage with the valves to open them as the openings in the carriages register with the openings in the aircylinder to permit compressed air to flow from the reservoir of the air-cylinder to the air-passages of the reciprocating carriages, and means for supplying damping liquid to the atomizers.

32. The combination with a damping-roller of alithographic press,oftwo atomizers adapted to throw spray for damping said roller, a reciprocating carriage for each atomizer u pon which it is borne, an vendless chain forming a loop, means for driving said chain, a tilting yoke secured to each reciprocating carriage, each yoke having two sets of springjaws, one set at each end of the yoke, one set adapted to seize the chain on one side of the loop and the other set adapted to seize it on the other side ot' the loop, a cam on each side of the loop for releasing the grip of oneset of jaws of each yoke, tilting the yoke and causing the other set of jaws to seize the chain upon the other side whereby a constant reciprocating longitudinal motion will be imparted to each reciprocating carriage and atomizer in the direction of the axis of the damping-roller and whereby the motion of each reciprocating carriage will always be in the reverse direction to, that of the other carriage, a water-chamber and an air-chamber in each carriage, communicating with the atomizer borne by said carriage, means for supplying each water-chamberwith damping liquid, an air-cylinder,containing areservoirof compressed aiigalong which the reciprocating carriages are adapted to travel, openings in the air-cylinder registering with openings into the carriages connecting with the air-passages of the atomizers, valves for said openings, springs for closing the valves, spring-buttons upon the carriages adapted to engage with the valves to open them as the openings in the carriages register with the openings in the air-cylinder to permit compressed air to ilow from the reservoir of the air-cylinder t0 the air-passages of the reciprocating carriages.

33. The combination with a damping-roller of a lithographie press, of an atomizer ada-pted to throw spray for damping said roller, a reciprocating carriage upon which the atomizer is borne, means for imparting to the carriage a reciprocating longitudinal motion in the direction of the axis of the dampingroller, an opening connecting with the watertnbe of the atomizer adapted to register at some part of the travel ot' the carriage with an opening from asource of supply of damping liquid, valves for said openings adapted, when the said openings register with each other, to open to permit damping liquid to iiow into the water-tube of the atomizer and means for supplying compressed air to the atomizer.

34. The combination with a damping-roller of a lithographie press, of an atomizer adapted to throw spray for damping said roller, a

reciprocating carriage upon which the atomizer is borne, means for imparting to the carriage a reciprocating longitudinal motion in the direction of the axis of the damping-roller, a water-chamber in the reciprocating carriage connecting with the water-tube of the atomizer, a water-reservoir connected witha source of supply of damping liquid, openings in the said water-chamber and the water-reservoir adapted to register with each other at some part ofthe travel ot' the carriage, valves for said openings adapted,when the said openings register with each other, to open to permit the liquid to fiow into the watertube of the atomizer, and means for supplying compressed air to the atomizer.

35. The combination with a damping-roller of alithographic press, of an atomizer adapted to throw spray for damping said roller, a reciprocating carriage upon which the atomizer is borne, means for imparting to the carriage a reciprocating longitudinal motion in the direction of the axis of the damping-roller, a water-cha mber in the reciprocating carriage connecting with the water-tube of the atomizer, a water-reservoir connected with asource -of supply of damping liquid, openings in the said openings, springs for keeping the valves closed, means for compressing the springs and opening the valves, when the openings register with each other, to permit the Vdamping liquid to flow into the water-tube of theA atomizer, and means for supplying compressed air to the atomizer.

36. The combination with a damping-roller of alithographic press, of an atomizer adapted to throw spray for damping said roller, a reciprocating carriage upon which the atomizer is borne, means for im parting to the carriage a reciprocating longitudinal motion in the direction of the axis of the damping-roller, a water-chamber in the reciprocating carriage connecting with the water-tube of the atomizer, a water-reservoir connected with asource of supply of damping liquid, openings in the said water-chamber and the water-reservoir adapted to register with each other at some partof the travel of the carriage, a valve for the opening into the water-chamber, a spring for closing said valve, a stop for limiting its opening movement, a valve for Athe opening out of the water-reservoir having a stem projecting outward through the opening, a spring for closing said valve, stronger than the spring of the water-chamber valve, whereby the reciprocating carriage in its travel will cause the outwardly-projecting stem of the water-reservoir valve to strike and open the water-chamber valve and when that valve strikes against its stop, to open the water-reservoir valve, whereby damping liquid will flow from the water-reservoir to the waterchamber, and an encircling ring for preventing the escape of liquid.

IOD

IIO

'37; The combination withad-ampiqng-rvour of alithographic pressi, of an atomizer adapted f to'th-r'ow spray for damping saidroller, areciprocating carriage upon which the atoinizer is borne, means for imparting to the carriage a reciprocating longitudinal motion in the direction Iof the axis ofthe damping-roller, an air-cylinder, containing 'a-l reservoir'of compressed air, along which the reciprocating 1o carriage is adapted to travel, openings inthe air-cylinder registering with an openin g into the carriage connecting with the air-passages of the atomizenfvalves for said openings,

y springs for closing the valves, a spring-button upon thecarriage adapted to engage with the Vvalves to open them as the opening in the'.

carriage registers with the openings in the aircylinderto 'permit compressed airto flow fromr the-'reservoir of the air-cylinder to the air-pas- 2o fsages of the lreciprocating carriage, a'watera chamber inthe reciprocating carriage connecting with the water-tube of the atomizer, a water-reservoir connected with a source of supply of dampingliquid, openings in the said `water-chjamber and the water-reservoiradapty ed to register with each other at some part ofl the travel of the carriage, valves for said open# rings, springs for keeping the valves closed,

means for compressing the springs and opening the Valves, when the openings register with each other, to permit liquid to flow into the water-tube of the atomizer, and means for supplying compressed air to the atomizer.

38. The combination with ada'inping-roller v 3 5 of a lithographie press, of two atomizers adapted to throw spray for damping said roller, `a reciprocating carriage for each atomizer upon which itis borne, means for imparting to each carriage a reciprocating longitudinal motion 4o in the direction of the axis of the dampingroller and inadirection the reverse 'ofjthatv ofthe travel of the ,other-carriage, means of. supplying compressed air to the atomizers, a water-chamber in each reciprocating carriage connecting with the water-tube of an atoinizer,

" water-reservoirs, oneto register with thev wa- Y y ter-chamber .Qf 4cach reciprocating carriage, each reservoir being connected witha source of supply of damping liquid, openings inthe 5o said water-'chamber of each carriage andits corresponding water-reservoir adapted to register with eachother at some part of thetravel of Y the carriage, Valves for said openings,

springs for keeping the valves closed, means for compressing the springs and opening'the /;valves, Vwhen the openings register with each other, to permit liquid toiiow into the'watertube of each atomizer. 39. The combination with a damping-roller 6o of alithograp'hic press, vof two'atomizers adapted to throw spray for damping said roller-a reciprocating carriage for each `atomizerfu'pon which it is borne,`mea.ns forim partin g to each carriage a reciprocating 4longitudinalmotion in the direction of the axisv of the damping# roller and in 'av direction the reverseof that` [of the travel of thefothercarriage, an air-cylyinder, containing a reservoir of "compressed air, alongvwhichthe reciprocating carriages are adapted to travel, openings' inthe air-cylinder registering with openings into thevcarriageseonnecting with the airp'assagesof the atomizers, valves for said openings, `springs for lclosing the Valves, vspring-buttonsv upon the-carriages" adapted to engage with the `valves vto open them as the openingsin the carriages register withthe openings' in `the air-cylinder to permit compressed air to flow from the reservoir of the air-cylinder to the l air-passages of the reciprocating carriages, a

water-chamber in each reciprocating 'carriage connecting `with the water-tube of 'anv atomizer, water-reservoirs, one to register with the water-chamber of each reciprocating carriage, each reservoir being connected with a source of supply of-damping liquid, openingsfin the said water-chamber ofl each carriage and its corresponding water-reservoir adapted to register with each other at some part of the-travel `of the carriage, valves y for said openings, springs for keeping the Valves closed, means for compressing the springs `and opening the Valves,when the openings register with each other, to permit liquid to iiow -into the waterltube of each atomizer.

40. 'The combination with a dam ping-roller of a lithographie press,of two atomizers adapted to throw spray for damping said roller, a reciprocating carriage for each atomizer upon 4which itis borne, means forimpartingto each carriage a reciprocating longitudinalmotion in the direction of the axis of the dampingroller and in a direction the reverse of that of the' travel of the other carriage, a water- 1 chamber and an air-chamber in each carriage 'comimunicating with the atomizer borne by IOO said carriage, an air-cylinder, containing a reservoir of compressed air, along which the reciprocating carriages are adapted to travel, openings in the air-cylinder registering with openings into the-carriagesconnecting with theair-passages of the atomizrers, vvalves for said openings, 'springs for closing the valves,

' spring-buttons uponthe carriages adapted to engage with the valves to open them -as the openings in the carriages register with the openings in the air-cylinder to permitv com pressed'air to iiow from thel reservoir of the air-cylinder to the yair-passages of the reciprocating carriages,-a water-chamber in each reciprocating carriage connecting with the water-tube pf an atomizer, Water-reservoirs,

one to register with the water-chamber of each reciprocating carriage, each :reservoir being connected with a source of supply 'of'damping liquid, openings in the said water-cham-- ber of each carriagef and its corresponding Water-reservoir adapted tvo register with each other at `some part 'of the travel ofthe carriage,.valvesfor said openings, springs for keeping the valves closed, means for compressing the springs and opening the valves,

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when the openings register with each other, to permit liquid to now into the water-tube of each atomizer.

41. In a multicolor-lithographie press, the combination of an impression-drum, a series of printing-cylinders and inking mechanisms therefor, a series of damping mechanisms which include a distributing-roller, two traveling atomizers for each damping mechanism, each adapted to have a reciprocating longitudinal motion in the direction o f the axes of the damping-rollers but in a direction `reverse to that of the other atomizer and each adaptedto throw spray fordamping said rollers, means for imparting such reverse longitudinal motion to the atomizers and means" for supplying suitable damping liquid and compressed air to the atomizers.

42. In a multicolor lithographie press, the combination of an impression-drum, a series of printing-cylinders and in king mechanisms therefor, a series `of damping mechanisms which include a distributing-roller, atomizers adapted to throw spray for dampening the dampin g-rollers,reeiproeatin g carriages upon which the atomizers are borne, means for imparting to such carriages a reeiproeatinglongitudinal motion in the direction of the axes of the damping-rollers, a water-chamber and an air-chamber in each carriage communicating with the atomizer borne upon said carriage, and means for supplying suitable damping liquid and compressed air to such chamber.

43. In a multicolor lithographie press, the combination of an impression-drum, a series of printing-cylinders and inking mechanisms therefor, a series of damping mechanisms which include a distributing-roller, two atomizers for each damping mechanism, adapted to throw spray for dampening the dampingrollers, a reciprocating carriage for each atomizer upon which it is borne, means for imparting to each carriage a reciprocating longitudinal motion in the direction of the axis of the damping-rollers and in a direction the reverse of that of the travel of the other earriage of the same damping mechanism, and means for supplying suitable damping liquid and compressed air to the atomizers.

44. In a multicolor lithographie press, the combination of an impression-drum, a series of printing-cylinders and inking mechanisms therefor, a series of damping mechanisms which include a distributing-roller, means actuated by suitable driving mechanism for positively driving the distributing-roller at a determinate rate of speed, two traveling spraying devices for each damping mechanism, each spraying device adapted to have a reciprocating longitudinal motion in the direction of the axes of the damping-rollers but always in a direction the reverse of that of the other spraying device and each adapted to throw spray for dampening the dampingrollers, means for imparting reciprocating longitudinal motion to the spraying devices and means for supplying the spraying de-V determinate rate of speed, two traveling atomizers for each damping mechanism, each atomizer adapted to have a reciprocating longitudinal motion in the direction of the axes of the damping-rollers but in a direction reverse to that of the other atomizers and each adapted to throw spray for damping said rollers` j means for imparting such reverse longitudinal motion to the atomizers and means for supplying a suitable damping liquid and eom` pressed air to the atomizers.

46. In a multicolor lithographie press, the combination of an impression-drum, a series of printing-cylinders and inking mechanisms therefor, a series of damping mechanisms which include a distributing-roller, means actuated by suitable driving mechanism for positively driving the distributing-roller ata determinate rate of speed, atomizers adapted to throw spray for dampening the dampingrollers, reciprocating carriages upon which the atomizers are borne, means for imparting to the carriages a reciprocating longitudinal motion in the direction of the axes of the damping-rollers, a water-cham ber and an airchamber in each carriage communicating with the atomizer borne by said carriage and means for supplying suitable damping liquid and compressed air to such chambers.

47. In a multicolor lithographie press, the combination of an impression-drum, a series of printing-cylinders and inking mechanisms therefor, a series of damping mechanisms which include a distributing-roller,means ac tuated by suitable driving mechanism for positively driving the distributing-roller at a determinate rate of speed, two atomizers for each damping mechanism, adapted to throw spray for dampening the damping-rollers, a reciprocating carriage for each atomizer on which it is borne, means for imparting to each carriage a reciprocating longitudinal motion in the direction of the axes of the dampingrollers and in a direction the reverse of that of the other carriage, and means for supplying suitable damping liquid and compressed air to the atomizers.

48. In a multicolor lithographie press, the combination of an impression-drum, a series of printing-cylinders and inking mechanisms therefor, a series of damping mechanisms which include a distributing-roller, means actuated by the driving mechanism of the press for positively driving the distributing-roller at a determinate rate of speed, two traveling spraying devices for each damping mechanism, each spraying device adaptedto have a TOO IIO

. 'reciprocating longitudinal v motion in thedil rect-ion of theaxes of the dampin g-rollersbu't always 1in a direction reverse to `that 5( )ff'theother' spraying device and each adapted to throwfspray for damping said rollersfmeans for imparting such reciprocating longitudinal motion to the spraying devices an'dmeans foi* supplying saidv spraying devices with suitable l a damping liquid.

'49. In a multicolor lithographie press, lthe, combination of'` an impression-drum, a series of printing-cylinders andinkinlg mechanisms therefor", 'a series :of damping Vn'lecharii'sms` which include a distributing-roller, means ac-v tuated by the dri-ving mechanism of thepreass for' positively driving the distributing-roller ata determinate rate of speed, two' traveling v atomizers, each adaptedto have `a reciprocatl ing longitudinal motion in the direction ofthe axes of the vdamping-rollersbut in a directid reverse to that of the otheratomizerand each adapted to throw spray for dampening said damping-rollers', means forrimpartin'g such reverselongitudin'al motion to the vatomizlvars, and means for supplying -suitable vdamping liquid and compressed air to the-atomilzers 50. In a'mnlticolor lithographie press, the

` combination of an impression-drum, a series of printing-cylinders'and inking mechanisms therefor,a `series of `damping mechanisms which include-a distributing-roller,` means actuated bythe driving vmechanism of .the'pr'es's for positively driving the distributingrolle at a determinate rate of speed, atomizers adapted tov throw spray for dampening'the which the atomizers are borne, means'ffcrimparting to such carriages a recipiocatinglongitidinal' motion inthedirectiob theaxes ofthe d/ampi'ngrolle`rs', a Water-chamber and an' airlchamber ineach carriagecominu'nieating with the atomizer borne by'suh carriage, and :means fori supplying suitabledamping liquid and'compreseed air to saidatomiz'ers; 1151;* In a multicolor lithographie press, the combination of an impression-drum, ay series of printing-'cylinders and inking mechanisms therefor,1 "a 'IJ/series fof "damping `mec`haiisns vvfhicliincludeaf distributing-rolleI-,means ac-l tnatedby the driving mechanism ofthe press for positively driving the distributinglrller" ata determinaterate of speed,tvvo atii'zrs for each damping mechanism for, dampeihg the damping-rollers, all-reciprocating carriagel-dam'ping-'rollers, reciprocating carrigeslpoii 

